Coronary sinus reperfusion catheter
First Claim
1. A non-occluding catheter for retroperfusion of tissue having a defined systemic vein, said vein draining blood from said tissue through a venous junction coupling said vein to the greater circulatory system, comprising:
- a non-occluding infusion tip, such that when retroperfusing said tissue with a retroperfusate flow, said tip is extends within said vein to a depth in a range of about 2 to 4 inches (5.08 to 10.16 cm) from said venous junction and does not occlude said vein, such that said blood continues to flow from said vein;
a pump having an inlet orifice and an outlet orifice;
a tube defining a plurality of channels including at least one withdrawal channel, each of which has a first withdrawal end, a withdrawal port, and a second withdrawal end, wherein said first withdrawal end is coupled to said withdrawal port and said second withdrawal end is coupled to said inlet orifice of said pump;
at least one infusion channel, each of which has a first infusion end, an infusion port located in said infusion tip, and a second infusion end, wherein said first infusion end is coupled to said infusion port and said second infusion end is coupled to said outlet orifice of said pump; and
a pressure monitoring channel for monitoring pressure at a pressure port at said infusion tip having a first monitoring end, a second monitoring end, and a pressure sensor, wherein said first monitoring end is coupled to said pressure port and said second monitoring end is coupled to said pressure sensor; and
means for controlling said pump having a flowmeter for measuring a rate of said retroperfusate flow, whereby fluid entering said withdrawal port is discharged at said infusion port at a flow rate in a range of about 5 to 50 mil./min. and at a pressure less than about 15 mm Hg, said tube and tip made from biocompatible, non-thrombogenic material.
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Accused Products
Abstract
A catheter for retroperfusion of myocardium has an infusion tip, such that when retroperfusing myocardium, the tip extends within the coronary sinus to a depth in a range of about 2 to 4 inches (5 to 10 cm) from the coronary sinus ostium. The catheter also comprises a tube defining at least three channels. The channels include an infusion channel, which has a first infusion end coupled to an infusion port located in the infusion tip and a second infusion end coupled to an outlet orifice of a pump; a withdrawal channel, which has a first withdrawal end coupled to a withdrawal port located in the superior vena cava and a second withdrawal end coupled to an inlet orifice of the pump; and a pressure monitoring channel for monitoring pressure at pressure port at the infusion tip having a first monitoring end coupled to the pressure port and a second monitoring end coupled to a pressure sensor. The catheter also has a microprocessor for controlling the pump and measuring a rate of retroperfusate flow, whereby autologous venous blood entering the withdrawal port is continuously discharged at the infusion port at a flow rate in a range of about 5 to 50 mil./min. and at a pressure less than about 15 mm Hg. The tube and tip are made from biocompatible, non-thrombogenic material. Further, the catheter has remotely identifiable markers spaced along the tube, and a marker is located at said infusion tip. The invention also is a method for coronary sinus retroperfusion. The method includes the steps of inserting the catheter through the patient'"'"'s jugular vein; guiding the catheter'"'"'s infusion tip into the coronary sinus, such that when retroperfusing myocardium, the tip extends within the coronary sinus to a depth in a range of about 2 to 4 inches (5 to 10 cm) from the coronary sinus ostium; and providing a non-synchronized retroperfusate flow of autologous venous blood at a rate in a range of about 5 to 50 mil./min. and at a pressure less than about 15 mm Hg.
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Citations
17 Claims
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1. A non-occluding catheter for retroperfusion of tissue having a defined systemic vein, said vein draining blood from said tissue through a venous junction coupling said vein to the greater circulatory system, comprising:
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a non-occluding infusion tip, such that when retroperfusing said tissue with a retroperfusate flow, said tip is extends within said vein to a depth in a range of about 2 to 4 inches (5.08 to 10.16 cm) from said venous junction and does not occlude said vein, such that said blood continues to flow from said vein; a pump having an inlet orifice and an outlet orifice; a tube defining a plurality of channels including at least one withdrawal channel, each of which has a first withdrawal end, a withdrawal port, and a second withdrawal end, wherein said first withdrawal end is coupled to said withdrawal port and said second withdrawal end is coupled to said inlet orifice of said pump;
at least one infusion channel, each of which has a first infusion end, an infusion port located in said infusion tip, and a second infusion end, wherein said first infusion end is coupled to said infusion port and said second infusion end is coupled to said outlet orifice of said pump; and
a pressure monitoring channel for monitoring pressure at a pressure port at said infusion tip having a first monitoring end, a second monitoring end, and a pressure sensor, wherein said first monitoring end is coupled to said pressure port and said second monitoring end is coupled to said pressure sensor; andmeans for controlling said pump having a flowmeter for measuring a rate of said retroperfusate flow, whereby fluid entering said withdrawal port is discharged at said infusion port at a flow rate in a range of about 5 to 50 mil./min. and at a pressure less than about 15 mm Hg, said tube and tip made from biocompatible, non-thrombogenic material.
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2. A coronary sinus retroperfusion non-occluding catheter for retroperfusion of myocardium, comprising:
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a non-occluding infusion tip, such that when retroperfusing myocardium with a retroperfusate flow, said tip extends within the coronary sinus to a depth in a range of about 2 to 4 inches (5.08 to 10.16 cm) from the coronary sinus ostium and does not occlude the coronary sinus, such that said blood continues to flow from the coronary sinus; a pump having an inlet orifice and an outlet orifice; a tube defining a plurality of channels including at least one withdrawal channel, each of which has a first withdrawal end, a withdrawal port, and a second withdrawal end, wherein said first withdrawal end is coupled to said withdrawal port and said second withdrawal end is coupled to said inlet orifice of said pump;
at least one infusion channel, each of which has a first infusion end, an infusion port located in said infusion tip, and a second infusion end, wherein said first infusion end is coupled to said infusion port and said second infusion end is coupled to said outlet orifice of said pump; and
a pressure monitoring channel for monitoring pressure at a pressure port at said infusion tip having a first monitoring end, a second monitoring end, and a pressure sensor, wherein said first monitoring end is coupled to said pressure port and said second monitoring end is coupled to said pressure sensor; andmeans for controlling said pump having a flowmeter for measuring a rate of said retroperfusate flow, whereby fluid entering said withdrawal port is discharged at said infusion port at a flow rate in a range of about 5 to 50 mil./min. and at a pressure less than about 15 mm Hg, said tube and tip made from biocompatible, non-thrombogenic material. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification